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Cockroaches.Pdf COCKROACHES: PICTORIAL KEY TO SOME COMMON SPECIES Harry D. Pratt SMALL, ABOUT 5/S" OR SHORTER MEDIUM TO LARGE, LONGER THAN 5/S INCH • •I I PRONOTUM WITH PRONOTUIII WITHOUT WINGS ABSENT, WINGS COVERING OR • 2 LONGITIPNAL LONGITUDINAl.• SHORTER AIIOOMEN,• OFTEN BLACK BARS BLACK BARS THAN A800MEN EXTENDING BEYOND I I i i I WIN8S ABSENT WINGS SHORTER PRONOTUM MORE PRONOTUIII ABOUT THAN ABOOIIEN THAN IA• INCH W10E 114 INGH WIDE WITH PALE BORDER FEMALE --'1-- GERMAN COCKROACH ....--i---MALE (BI.,'tllla ,.rmtlniCtl) .•. ..... , . •. \ ", " WlN8S COYEfIING ABOUT HALF WINGS COVERING NEARLY ALL OF ABDOMEN PRONOTUM OF ABDOMEN OR EXTENDING ORIENTAL COCKROACH WOOD ROACH ABOUT 1/4 INCH WIDE BEYOND. PRONOTUM NARROWER (Bltll/tI Dritlnltlli6) (PtlrcDblalltl 6/IP.) -... f I' " \ ".m ~ ~ .~, I \ i : FRONT WING WITHOUT PALE ~J~T(~ '~' STREAK. PRONOTUM SOLID \ ( COLOR, OR WITH PALE DESIGN ONLY MODERATELY CON~CUOUS BROWN-BANDED COCKROACH I ~ (s..IIt1 .","cfilium) I i WOOD ROACH PRONOTUM SOLI) DARK COLOR. PRONOTUM USUALLY WITH SOME FRONT WING WITH OUTER (Ptlrcobkllltl 6pp.) GENE~L COLOR VERY DARK PALE AREA. GENERAL COLOR SELDOM PALE STREAK AT BASE. BROWN TO BLACK. DARKER THAN REDDISH CHESTNUT PRONOTUM STRIKINGLY MARKED 1;;;;;--',-- PAlE STREAK AUSTRALIAN COCKROACH LAST SEGMENT OF LAST SEGMENT OF (P.r~It1"". tlWlrtlltl6if1t1) SMOKY BROWN COCKROACH CERCUS NOT TWICE CERCUS TWICE AS AS LONG AS WIOE LONG AS WIDE (JI (Ptlrlpltlntl'" 'IIIi,inD6a) (JI SCALE ... INCHES BROWN COCKROACH AMERICAN COCKROACH • (~r~ltlntlftl b'~ntltl) (~r~ltlMltI tllHTicantl) COCKROACHES: KEY TO EGG CASES OF COMMON DOMESTIC SPECIES HlU'old George Scott, Ph.D. and MlU'gery R. Borom less than !4" long more than W' long subsegmenu apparent subsegmenu inapparent Eill. I with about 16 subsegmenu with about 8 subsegments length more than twice width length less than twice width Blatella germanica Sup-ella !!!p!lIectilium GERMAN COCKROACH BROWN·BANDED• COCKROACH with lateral indentations without lateral indentations terminal point strong terminal point weak Perip-laneta brunnea Perip-lanera fuliginosa BROWN COCKROACH SMOKY·BROWN COCKROACH not symmetrical symmetrical Blana orjentalis ORIENTAL COCKROACH length more than twice width length less than twice width ;;;;' Perip-Ianera australasiae Perip-Ianeta americana AUSTRALIAN COCKROACH AMERICAN COCKROACH 57. COCKROACHES: KEY TO SOME COMMON SPECIES FOUND IN THE UNITED STATES Harry D. Pratt & Chester J. Stojanovich 1. Middle and hind femora both with numerous strong spines along the ventral margin (Fig. 1 A) •• 2 Middle and hind femora without strong spines along the ventral margin (Fig. 1 B) .•••••••••••12 Fig. 1 A Fig. 1 B 2. Comparatively large species 18 mm. or longer; subgenital plate of female divided longitudinal­ ly, valvular (Fig. 2 A); male styli similar, slender, elongate and straight (Fig. 2 B) ••••••• 3 Species usually less than 18 mm. lor..g; or, if longer, anterior-ventral margin of front femur with several large stout spines on basal portion, followed by a row of smaller spines (Fig. 2 C); female subgenital plate simple, not divided (Fig. 2 D); male styli variable, frequently modified, asymmetrical, or unequal in size (Fig. 2 E) ........................................8 female Fig. 2 A male male subgenital subgenital plate !t=,~ ... ;;r,) plate Fig. 2 G " Fig. 2 E ..---stylus .~ 3. Front wing in both sexes extending beyond tip of abdomen (Fig. 3 A) •••.••.•••••..•••••••.•••4 Front wing in both sexes not reaching tip of abdomen (Fig. 3 B) .......•.........•...•....•.. 7 Fig. 3 B 4. Uniformly dark blackish-brown, shining species (Fig. 4 A) ...•.••••....••.......••....••..••.. •••••..•••....•••.......•••.••.••....•.•....... (Periplaneta fuliginosa) SMOKY BROWN COCKROACH Species with some yellowish markings on pronotum or front wing or both (Fig. 4 B) ..•.•••.•.•5 4 A Fig. 4 B 5. Front wing with yellowish stripe; pronotum with yellowish and darker areas very contrastingly marked (Fig. 5 A) .....•.•.....•••..•••..••..•• (Periplaneta australasiae) AUSTRALIAN COCKROACH Front wing entirely brownish; pronotum with yellowish and darker areas less contrastingly marked (Fig. 5 B) ............................................................................ 6 Fig. : A Fig. 5 B 5ge 6. Styli very long and slender, longer than space between their bases (Fig. 6 A): cercus long and slender particularly in the male; male supra-anal plate deeply notched (Fig. 6 B) ...•.....•••. " •..•..••••..••••.•.••••..••.••••....••.••.•••.. (Periplaneta americana) AMERICAN COCKRQ,\CH Styli shorter, not as long as space between their bases (Fig. 6 C); cercus stouter and more evenly spindle-shaped; male supra-anal plate truncate or feebly notched (Fig. 6 D) ••.•.••••••• • . .• . •. •. •• .•••• • •• , •..•...•.••..•.•....•...•... (Periplaneta brunnea) BROWN COCKRQ,\CH Fig. 6 A - _supra-anal plate-­ 7. Blackish species, 15-27 mm. long; male front wings covering two-thirds of abdomen (Fig. 7 A); female front wings widely separated pads (Fig. 7 B); first segment of hind tarsus longer thaD segments 2-5 combined, pulvilli of second and third segments small (Fig. 7 C) .•••••••••••••••• .. ..•. ....... ... ... ... .••..•.••.. .•.•....... .•.••••••••. (~ orientalis) ORIENTAL COCKRQ,\CH Mahogany brownish species, 30-40 mm. long; front wings reduced to short pads, not widely sep­ arated (Fig. 7 D); first segment of hind tarsus shorter than segments 2-5 combined, pulvilli of second and third segments large (Fig. 7 E) .... (Eurycotis floridana) LARGE FLORI~ COCKRQ,\CH Fig. 7 A Fig. 7 B Fig. 7 D II ~. :J :5: Fig. 7 C = Fig. 7 E .60 8. Pronotum with two conspicuous longitudinal dark bars on a pale background (Fig. 8 A) ••.•.••••9 Pronotum variously marked, but without two conspicuous dark longitudinal bars (Fig. 8 B) .••. lO Fig. 8 A Fig. 8 B 9. Face pale (Fig. 9 A); male subgenital plate asymmetrical, styli very unequal, short and round­ ed (Fig. 9 B) ........................................... (Blattella germanica) GERMAN COCKROACH Face dark; male subgenital plate almost symmetrical, styli somewhat elongate and subequal in size (Fig. 9 C) ••••••..••.••••••••.••••••••••••••••••••••••••• (Blattella vaga) FIELD COCKROACH Fig. 9 B 10. Pronotum with a broad dark central stripe; front wings of both sexes appearing to have two transverse brownish bars, some pale specimens showing bars poorly (Fig. 10 A). Width of pro­ notum usually not exceeding 4.5 mm ••••••••••••• (Supella supellectilium) BROWN-BANDED COCKROACH Pronotum and front wings otherwise, or, if pronotum is so marked, its width exceeding 4.5 mm. (Fig. 10 B) ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 11 Fig. 10 A Fig. 10 B 61. 11. Larger species 9-25 mm. or more in length; front wing without small dark spots in winged specimens (Fig. 11 A); claws equal (Fig. 11 B); ventral anterior margin of front femur with 3 long apical spines (Fig. 11 C) •••••••••...•••••....• (Parcoblatta species) WOOD COCKROACHES Small species, 8-9 mm. long; front wing with small dark spots (Fig. 11 D); claws unequal (Fig. 11 E); ventral anterior margin of front femur with 2 long apical spines (Fig. 11 F) ... ••...•.••••..••••••••••••••.••..••.••••.. (Ectobius pa11idus) SPOTTED MEDITERRANEAN COCKROACH 11 B Fig. 11 E Fig. 11 D Fig. 11 A Fig. 11 C Fig. 11 F 12. Top of eyes close together (Fig. 12 A); general color a nearly uniform greenish; posterior margin of pronotum somewhat angularly produced (Fig. 12 B) (Panchlora nivea) CUBAN COCKROACH Top of eyes sometimes distant (Fig. 12 C); general color various shades of brown and gray; pronotum usually not angularly produced posteriorly (Fig. 12 D) •..•..•........ , ...•....... 13 Fig. 12 A Fig. 12 C Fig. l2 D 13. Medium sized species, 30 mm. or less in lengt~ including folded wings (Fig. 14 A & B) •••••• 14 Large species 40 mm. Qr more in length, including folded wings (Fig. 15 A & C) .••.•••••••.• lS 14, Pronotum uniformly blackish except a narrow yellowish band along anterior and lateral margins (Fig. 14 A) .•.•••.•..•.••••••.••••••.•.••.••••••• (pycnoscelus surinamensis) SURINAM COCKROACH Pronotum pale with a narrow dark longitudinal submarginal band on each side and irregular brownish blotches on disc (Fig. 14 B) ••••..••••••••... (Nauphoeta cinerea) CINEREOUS COCKROACH Fig. 14 A Fig. 14 B 15. Disc or pronotum with shield-like design, sometimes skull-like design (Fig. IS A); front femur with one or more stout spurs on underside (Fig. IS B) ••...•.•.•......••.••.••.•••••••• .....•.•.•.•.•.•.•..••.............. (Blaberus giganteus; Blaberus craniifer) GIANT COCKROACH Disc of pronotum with shield-like design darkened in outline only, not solid black (Fig. IS C); front femur with a line of stiff hairs on anterior-ventral margin (Fig. IS D) .•.•...•••. • . • . • ••• • . • • . • . • •. • . .. .• • . • . •• •••• . • . •• • •• • . (Leucophaea maderae) MADEIRA COCKROACH , T rn!l1lII1l\'~ t Fig. IS B Fig. IS D .
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